Telescope is an optical system that makes the incident parallel beams pass through the objective lens and eyepiece and still exit in parallel. The objective lens images the far-sighted field to the imaging plane, and the eyepiece magnifies the imaging, so that the far-sighted field can be observed. Just experience the fun of hands-on, don't spend too much energy, experience the fun of hands-on, but don't expect too much from the effect.
Extended data:
How to choose a telescope:
1, optical quality and optical appearance are often contradictory. If you want both, you need to increase the budget greatly.
2. Every kind of telescope has a specific environment suitable for its use, so as to achieve perfect results. No telescope can do everything.
3. The volume of the roof prism telescope is the smallest in the same size, but the optical quality is often not as good as that of the Polo prism telescope.
4. The price of telescope depends on many external factors such as cost, profit and marketing strategy, and has little to do with the multiple of telescope.
5. The imaging effect of telescope depends on many factors, and the multiple is only one of them. It is not advisable to blindly pursue multiples.
6. There is a great possibility of counterfeiting military telescopes. Regular military telescopes are basically black and expensive.
7. Don't buy binoculars with large zoom. This kind of telescope has many problems, such as small field of view, serious imaging distortion, easy deviation of optical axis and so on.
8. To know the telescope with the same specifications and parameters, the actual effect may be far from each other, and of course the price will be far from each other.
9. Try not to buy a red film telescope. Only suitable for high reflection environment such as ice and snow. Generally speaking, the imaging is dim and the color cast is serious.
10, there has never been any infrared night vision telescope, but some specifications of the telescope, such as 7X50, are also very effective in low light environment!
1 1. Try to refer to third-party websites and evaluation experience articles when choosing a telescope, which can maximize the advantages and disadvantages of the telescope.
Baidu encyclopedia-telescope